A strong trough produced heavy rainfall occurred over Tutuila on May 26th between 300 and 700SST to cause widespread flooding over the island. The rainfall produced numerous landslides across the island.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ASO wrote it up.
A strong trough produced heavy rainfall occurred over Tutuila on May 26th between 300 and 700SST to cause widespread flooding over the island. The rainfall produced numerous landslides across the island.
The national radar mosaic for the moment the first event began.
4 heavy rain. Local standard time, as filed.
Emergency management reported a landslide during the early morning hours on May 26th in the village of Amouli due to heavy rainfall. Due to no radar coverage and no rain gage data in the area, no accurate rainfall depth or intensity is available.
Emergency management reported a landslide during the early morning hours on May 26th in the village of Masausi due to heavy rainfall. Due to no radar coverage and no rain gage data in the area, no accurate rainfall depth or intensity is available.
Emergency management reported a landslide during the early morning hours on May 26th in the village of Afao due to heavy rainfall. Due to no radar coverage and no rain gage data in the area, no accurate rainfall depth or intensity is available.
Emergency management reported a landslide during the early morning hours on May 26th between the villages of Fagamutu and Atauloma due to heavy rainfall. Large rocks and dirt covered both the eastbound and westbound lanes. Due to no radar coverage and no rain gage data in the area, no accurate rainfall depth or intensity is available.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in American Samoa in 2023Every state in 2023This day in weather historyWarnings in American Samoa, May 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1093382, 1093383, 1093385, 1093387.